title: Antioxidant activity of L-adrenaline: a structure-activity insight.
abstract: L-adrenaline belongs to a group of the compounds known as catecholamines, which play an important role in the regulation of physiological process in living organisms. The antioxidant activity and antioxidant mechanism of L-adrenaline was clarified using various in vitro antioxidant assays including 1,1-diphenyl-2-picryl-hydrazyl (DPPH), 2,2'-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS), N,N-dimethyl-p-phenylenediamine (DMPD(+)), and superoxide anion radicals (O(2)(-)) scavenging activity, hydrogen peroxide (H(2)O(2)), total antioxidant activity, ferric ions (Fe(3+)) and cupric ions (Cu(2+)) reducing ability, ferrous ions (Fe(2+)) chelating activity. L-adrenaline inhibited 74.2% lipid peroxidation of a linoleic acid emulsion at 30 microg/mL concentration. On the other hand, butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT), alpha-tocopherol and trolox displayed 83.3, 82.1, 68.1 and 81.3% inhibition on the peroxidation of linoleic acid emulsion at the same concentration, respectively. BHA, BHT, alpha-tocopherol and trolox were used as reference antioxidants and radical scavenger compounds. Moreover, this study will bring an innovation for further studies related to antioxidant properties of L-adrenaline. According to present study, L-adrenaline had effective in vitro antioxidant and radical scavenging activity.
authors.affiliation: Atatürk University, Faculty of Sciences, Department of Chemistry, TR-25240-Erzurum, Turkey. igulcin@atauni.edu.tr
authors.forename: Ilhami
authors.initials: I
authors.lastname: Gülçin
mesh_terms: D000975:Antioxidants / Q000494:pharmacology*; D052160:Benzothiazoles / Q000737:chemistry; D001713:Biphenyl Compounds / Q000737:chemistry; D002083:Butylated Hydroxyanisole / Q000494:pharmacology; D002084:Butylated Hydroxytoluene / Q000494:pharmacology; D002839:Chromans / Q000494:pharmacology; D003300:Copper / Q000737:chemistry; D004305:Dose-Response Relationship, Drug; D004837:Epinephrine / Q000494:pharmacology*; D005296:Ferrous Compounds / Q000737:chemistry; D016166:Free Radical Scavengers / Q000737:chemistry; D006861:Hydrogen Peroxide / Q000737:chemistry; D019787:Linoleic Acid / Q000037:antagonists & inhibitors / Q000494:pharmacology; D015227:Lipid Peroxidation / Q000187:drug effects; D010084:Oxidation-Reduction; D010851:Picrates / Q000737:chemistry; D010881:Piperidones / Q000737:chemistry; D013329:Structure-Activity Relationship; D013451:Sulfonic Acids / Q000737:chemistry; D013481:Superoxides / Q000737:chemistry; D024502:alpha-Tocopherol / Q000494:pharmacology
chemical_list: D000975:Antioxidants; D052160:Benzothiazoles; D001713:Biphenyl Compounds; D002839:Chromans; D005296:Ferrous Compounds; D016166:Free Radical Scavengers; D010851:Picrates; D010881:Piperidones; D013451:Sulfonic Acids; C491664:dimethylpiperidone; D013481:Superoxides; D002084:Butylated Hydroxytoluene; D002083:Butylated Hydroxyanisole; C002502:2,2'-azino-di-(3-ethylbenzothiazoline)-6-sulfonic acid; D003300:Copper; D019787:Linoleic Acid; D006861:Hydrogen Peroxide; C004931:1,1-diphenyl-2-picrylhydrazyl; D024502:alpha-Tocopherol; C010643:6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid; D004837:Epinephrine